I think you mean Loopnet's MEMBERS (they're just agents like us BTW). I do understand, they show awesome proforma numbers, and when you call they're generally like "with a little work and management i see this being an incredible opportunity...What? Oh, you want to know what the building is doing on actual, well, it's about 30% of the posted proforma to date...." LOL
SO BE careful, ask the right questions and make an educated decision. I see most of the agents on loopnet post a 22% cap rate, and even on proforma number it only works out to be like 11% cap. I HATE that. Best of luck guys!